Electrical system for acoustic in-situ measurement device for seafloor sediments

Abstract

The utility model relates to an electrical system for a submarine sediment acoustic in-situ measurement device, which belongs to the technical field of submarine measurement electrical control and comprises a shipborne part and an underwater part which are connected through a photoelectric composite cable. The shipborne part is used for controlling the work of the underwater part; wherein the underwater part comprises a plurality of modular units which are connected through standardized interfaces, and the modular units comprise a main control unit, an acoustic measurement unit, a power amplifier unit, a transducer unit, a hydrophone unit and a power supply unit. According to the electrical system for the acoustic in-situ measurement device for the submarine sediments, through modular design, the adaptability and universality of the electrical system are improved; and moreover, a worker can add corresponding units or modules according to measurement requirements, so that the expandability of the system is improved, and different measurement scenes and requirements are better met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the electrical control technical field of sea bottom measurement, especially relates to a kind of electrical system for sea bottom deposit acoustic in-situ measurement device. BACKGROUND

[0002] The acoustic characteristic parameters of sea bottom deposit (mainly referring to sound velocity and sound attenuation coefficient) are of great significance for marine sound field analysis, engineering geological exploration and marine geoscience research, and the sea bottom deposit acoustic in-situ measurement device has become an important means to obtain the acoustic characteristic parameters of deposit. The electrical system is an important part of the development of the measurement device, and with the continuous updating and iteration of the sea bottom deposit acoustic in-situ measurement device, its function is becoming more and more complex, and the performance, reliability, adaptability and expandability of the electrical system are particularly important.

[0003] In the prior art, Chinese invention patent CN111142162B provides an embedded controller and control method of a sea bottom deposit acoustic characteristic in-situ measurement system, the controller adopts a split design scheme of embedded core board and single-chip microcomputer data acquisition control board, and can realize high-definition video visual field measurement control. However, the controller is only one part of the electrical system of the sea bottom deposit acoustic in-situ measurement device, and the complete electrical system and control method need the cooperation of multiple components, which are not mentioned in the patent.

[0004] Therefore, how to provide an electrical system for sea bottom deposit acoustic in-situ measurement device with strong adaptability is a technical problem to be solved at present. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the prior art, the utility model provides an electrical system for sea bottom deposit acoustic in-situ measurement device, which improves the adaptability and versatility of the electrical system through modular design.

[0006] The utility model provides an electrical system for sea bottom deposit acoustic in-situ measurement device, which comprises a ship-borne part and an underwater part, the ship-borne part and the underwater part are connected through an optical-electric composite cable, and the ship-borne part is used for controlling the operation of the underwater part. The underwater part comprises a plurality of modular units connected through standardized interfaces, comprising:

[0007] A main control unit is connected with the ship-borne part, comprising a main control module, the main control module is used for controlling the action of other units according to the instruction of the ship-borne part, and monitoring the state of other units.

[0008] An acoustic measurement unit connected to the main control unit, comprising an acoustic signal emission and collection module, which is used to generate acoustic signals according to the instructions of the main control unit, and is also used to collect acoustic measurement data and transmit the acoustic measurement data to the main control module;

[0009] A power amplifier unit connected to the acoustic measurement unit, comprising a power amplifier module, which is used to amplify the acoustic signals emitted by the acoustic measurement unit into high-voltage waveform electrical signals and transmit them;

[0010] A transducer unit connected to the power amplifier unit and the acoustic measurement unit, respectively, comprising a transmitting transducer, which is used to convert electrical signals into acoustic wave vibrations and emit them into the seabed sediments;

[0011] A hydrophone unit connected to the acoustic measurement unit, comprising a hydrophone, which is used to receive acoustic wave signals passing through the seabed sediments and convert them into electrical signals as acoustic measurement data transmitted to the acoustic signal emission and collection module;

[0012] A power supply unit carrying battery packs of different voltages, which is used to supply power to the shipborne part and the underwater part.

[0013] The technical solution improves the adaptability and versatility of the electrical system through modular design.

[0014] In some embodiments, the underwater part further comprises a sampling unit electrically connected to the power supply unit, which is used to sample the seabed sediments during measurement. The technical solution enables the device to not only obtain acoustic characteristic data but also directly obtain sediment samples, providing a physical basis for subsequent multi-dimensional analysis.

[0015] In some embodiments, the underwater part further comprises a hydraulic unit connected to the main control unit and the power supply unit, respectively, which is used to drill into the seabed sediments according to the instructions of the main control unit.

[0016] In some embodiments, the underwater part further comprises an external unit connected to the main control unit, which comprises a camera used to obtain underwater images. The technical solution enables the device to intuitively obtain image information of the seabed and the sediment measurement device in the underwater environment during measurement.

[0017] In some embodiments, the external unit further comprises an illumination module used to assist the camera in shooting underwater images. The technical solution provides sufficient light through the illumination module, significantly improving the clarity and quality of the camera shooting underwater images.

[0018] In some embodiments, the peripheral unit further comprises a displacement sensor connected to the probe rod for measuring the penetration depth of the probe rod. The displacement sensor is configured to obtain the penetration depth in real time, so that the drilling parameters can be adjusted in time to avoid drilling deviation and improve the efficiency and accuracy of the measurement work.

[0019] In some embodiments, the ship-borne part comprises a host computer unit connected in communication with the main control unit, including an action monitoring host computer and an acoustic measurement host computer. The action monitoring host computer is configured to send control instructions and monitor the status of each unit, and the acoustic measurement host computer is configured to process, analyze and display acoustic measurement data.

[0020] In some embodiments, the ship-borne part further comprises a communication unit connected to the main control unit and the host computer unit, respectively, for transmitting control instructions from the host computer unit to the main control module, and for transmitting acoustic measurement data collected by the main control module to the host computer. The communication unit establishes a bidirectional data transmission channel, effectively solving the problem of data interaction between the ship-borne part and the underwater part.

[0021] In some embodiments, the power supply unit further comprises a power management module connected to each battery group of different voltages and a protection circuit connected to the power management module. The protection circuit is configured to cut off the power supply of the high-voltage battery group when an abnormality occurs in the circuit. The power management module is configured to reasonably distribute the current of each battery group according to the needs of each unit.

[0022] In some embodiments, the main control unit further comprises an attitude module connected to the main control module for obtaining real-time attitude data of the seabed sediment acoustic in-situ measurement device and transmitting the real-time attitude data to the main control module. The attitude data fed back by the attitude module in real time can be used by the main control module to accurately correct the measurement data, ensuring that the measurement results are true and reliable, and providing accurate data basis for studying the seabed geological structure, sediment type and physical properties.

[0023] Based on the above scheme, the electrical system of the seabed sediment acoustic in-situ measurement device in the embodiment of the utility model, through the modular design, improve the adaptability and versatility of electrical system, in the research and development process of measurement device, do not need to rely on relevant electrical control professional to redesign electrical system every time for different type measurement device, can reduce the over-reliance on electrical control professional in the research and development process, thereby improve the research and development efficiency;And the function of each modular unit is clear, the cooperative work of each unit can guarantee the effective realization of the function of the electrical system of the seabed sediment acoustic in-situ measurement device, in addition, the electrical system in the above embodiment provides the simplest technical scheme, not only can be suitable for the measurement device of acoustic probe fixed installation in the bottom of measurement device frame, the staff can increase the corresponding unit or module on the basis according to the measurement demand, also can be suitable for the measurement device of acoustic probe installation on telescopic probe rod, thereby further improve the expansibility of system, to better meet the different measurement scene and requirement. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings described herein are used to provide further understanding of the utility model, constitute a part of this application, the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute the improper limitation of the utility model. In the drawings:

[0025] Figure 1 It is the structural diagram of the electrical system for seabed sediment acoustic in-situ measurement device in the embodiment of the utility model;

[0026] Figure 2 It is the structural diagram of the electrical system for seabed sediment acoustic in-situ measurement device in the embodiment of the utility model;

[0027] Figure 3 It is the structural diagram of the electrical system for seabed sediment acoustic in-situ measurement device in the embodiment of the utility model. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiment will be described clearly and completely in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0029] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] The terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features.

[0031] In the description of the utility model, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected, can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] The terms "system", "unit", "module" used in this paper are a method for distinguishing different components, elements, parts or components of different levels, which can be replaced by other expressions that can achieve the same purpose.

[0033] As Figures 1-3As shown in one embodiment of the electrical system and control method for the seabed sediment acoustic in-situ measuring device of the present application, the electrical system for the seabed sediment acoustic in-situ measuring device comprises a shipboard part and an underwater part, the shipboard part and the underwater part are connected through an electro-optical composite cable, the shipboard part is used to control the operation of the underwater part; wherein the underwater part comprises a plurality of modular units connected through standardized interfaces, including a main control unit, an acoustic measuring unit, a power amplifier unit, a transducer unit, a hydrophone unit, and a power supply unit; wherein the main control unit is connected with the shipboard part, and comprises a main control module, which is used to control the actions of other units according to the instructions of the shipboard part, and monitor the status of other units; the acoustic measuring unit is connected with the main control unit, and comprises an acoustic signal emission and collection module, which is used to generate acoustic signals according to the instructions of the main control unit, and also used to collect acoustic measurement data and transmit the acoustic measurement data to the main control module; the power amplifier unit is connected with the acoustic measuring unit, and comprises a power amplifier module, which is used to amplify the acoustic signals emitted by the acoustic measuring unit into high-voltage waveform electrical signals and transmit them; the transducer unit is connected with the power amplifier unit and the acoustic measuring unit respectively, and comprises a transmitting transducer, which is used to convert the electrical signals into acoustic vibrations and emit them into the seabed sediment; the hydrophone unit is connected with the acoustic measuring unit, and comprises a hydrophone, which is used to receive the acoustic signals passing through the seabed sediment and convert them into electrical signals as acoustic measurement data transmitted to the acoustic signal emission and collection module; the power supply unit carries different voltage battery groups, which are used to supply power for the shipboard part and the underwater part.

[0034] In the above exemplary embodiment, the electrical system for the seabed sediment acoustic in-situ measuring device is designed in a modular way, which improves the adaptability and versatility of the electrical system. During the development process of the measuring device, it is not necessary to rely on relevant electrical control professionals to redesign the electrical system every time for different types of measuring devices, which can reduce the over-reliance on electrical control professionals during the development process, thereby improving the development efficiency. The functions of each modular unit are clear, and the cooperative work of each unit can ensure the effective implementation of the functions of the electrical system of the seabed sediment acoustic in-situ measuring device. In addition, the electrical system in the above embodiment provides the simplest technical solution, which can be applied to the measuring device with the acoustic probe fixedly installed at the bottom of the measuring device frame. The staff can add corresponding units or modules based on the measuring requirements, further improve the expandability of the system, and better meet different measurement scenarios and requirements.

[0035] Further, the transducer unit can comprise one to multiple transmitting transducers, and the hydrophone unit can also comprise one to multiple hydrophones.

[0036] In some embodiments, as Figure 2As shown, the master control unit further comprises a posture module connected to the master control module, for acquiring real-time posture data of the seabed sediment acoustic in-situ measuring device and transmitting the real-time posture data to the master control module. Due to the complex and changeable seabed environment, the measuring device is easily affected by factors such as water flow and terrain when operating, and the posture of the measuring device changes. If the posture deviates greatly, it will seriously interfere with the accuracy of acoustic measurement, such as changing the sound wave propagation path and angle, resulting in errors in the measurement results of sound velocity, sound attenuation, etc. Through the real-time feedback of the posture data of the posture module, the master control module can accurately correct the measurement data, ensure the authenticity and reliability of the measurement results, and provide accurate data basis for studying the seabed geological structure, sediment type and physical properties. At the same time, it is also convenient for the operator to master the device posture in real time, timely discover potential abnormalities, and ensure the smooth development of the measurement work.

[0037] In some embodiments, as shown in Figure 2 As shown, the master control unit further comprises a storage module connected to the master control module, for storing all data collected by the master control module. By saving all data through the storage module, data loss is avoided.

[0038] It should be noted that, on the basis of the master control unit, the acoustic measuring unit, the power amplifier unit, the transducer unit, the hydrophone unit and the power supply unit, the sampling unit or the hydraulic unit is added, and the electrical system of the seabed sediment acoustic in-situ measuring device can be applied to the measuring device for installing the acoustic probe on the telescopic probe rod. The peripheral unit can be selected according to the measurement requirements.

[0039] Embodiment 2

[0040] This embodiment adds modular units as needed on the basis of embodiment 1.

[0041] In some embodiments, as shown in Figure 3 As shown, the underwater part further comprises a sampling unit electrically connected to the power supply unit, for sampling the seabed sediment during measurement. Through the setting of the sampling unit, the device can not only obtain acoustic characteristic data, but also directly obtain sediment samples, providing a physical basis for subsequent multi-dimensional analysis.

[0042] In some embodiments, as shown in Figure 3 As shown, the sampling unit comprises a sampler and a sampling driver, the sampler is installed on the output shaft of the sampling driver, and the sampling driver is connected to the power supply unit; when sampling is needed, the power supply unit is powered on, the sampling driver drives the sampler to sample, and the power is turned off after sampling is completed. By connecting the sampling driver directly to the power supply unit, the power is turned on for sampling and the power is turned off to stop sampling. When the control circuit of the master control unit fails, the sampler will not work excessively.

[0043] Further, the sampler uses high-frequency vibration sampling equipment, which can be applied to the soft seabed conditions. The sampler is provided with a guide head, a sediment sampling tube and a one-way valve. The guide head can ensure accurate positioning of the sampling position. The sediment sampling tube is responsible for sample collection. The one-way valve prevents leakage during sample collection. The above-mentioned components can ensure the accuracy and integrity of the sampling.

[0044] In some embodiments, as shown in Figure 3 the underwater part further comprises a hydraulic unit connected with the main control unit and the power supply unit respectively, and used for drilling into the seabed sediment according to the instruction of the main control unit.

[0045] In some embodiments, as shown in Figure 3 the hydraulic unit comprises a hydraulic driver and a hydraulic motor. The hydraulic driver is connected with the main control module and used for controlling the operation of the hydraulic motor and obtaining the rotation speed of the hydraulic motor. The hydraulic cylinder of the hydraulic motor is used for connecting the probe rod. Through the flexible control of the main control unit on the hydraulic unit, the drilling parameters can be accurately adjusted according to different measurement requirements, which can effectively support the in-depth research on the seabed stratified structure and the acoustic characteristics of each layer varying with depth.

[0046] In some embodiments, as shown in Figure 3 the hydraulic unit further comprises a drilling motor and a water pump motor. The hydraulic driver is connected with the drilling motor and the water pump motor respectively. The hydraulic driver is used for controlling the operation of the drilling motor and the water pump motor, and obtaining the rotation speed of the drilling motor and the rotation speed of the water pump motor respectively. The drilling motor is used for driving the probe rod to rotate. The probe rod is provided with a drill bit at the top, and the drill bit is jetted by the water pump motor. The drill bit can be selected according to the seabed geological conditions. Through the setting of the drilling motor and the water pump motor, the adaptability of the acoustic in-situ measurement can be greatly improved.

[0047] In some embodiments, the sampling unit is installed at the bottom of the hydraulic unit. After the hydraulic unit drills into the sediment and carries the sampling unit to the required depth, the sampling unit performs sampling.

[0048] In some embodiments, as shown in Figure 3 the underwater part further comprises an external unit connected with the main control unit. The external unit comprises a camera used for obtaining underwater images. Through the setting of the camera, the image information of the underwater environment and the sediment measuring device can be intuitively obtained during the measurement. Through these images, researchers can more comprehensively and accurately understand the actual situation of the measurement area, such as the surface morphology of the sediment and the surrounding seabed topography. The acoustic measurement data can be mutually complementary, which can greatly improve the intuitiveness and accuracy of the research on the seabed geological structure and the characteristics of the sediment, and provide more abundant and stereoscopic data support for the marine geological research.

[0049] In some embodiments, as shown inFigure 3 As shown, the peripheral unit further comprises a lighting module for assisting the camera in shooting underwater images. As an illustrative embodiment, the lighting module comprises LED lights. Since the light in the seabed environment is extremely weak, sufficient light is provided by the lighting module, which significantly improves the clarity and quality of the camera shooting underwater images, making the acquired images more detailed.

[0050] In some embodiments, as shown in Figure 3 As shown, the peripheral unit further comprises a displacement sensor connected to the probe rod for measuring the penetration depth of the probe rod. Through the setting of the displacement sensor, the penetration depth is obtained in real time, which can timely adjust the drilling parameters, avoid drilling deviation, and improve the efficiency and accuracy of the measurement work.

[0051] In some embodiments, the transmitting transducer is installed on the extension arm, which is unfolded during measurement and can be folded up at other times; during measurement, it is usually required that the extension arm and the probe rod are perpendicular to each other. As shown in Figure 3 As shown, the peripheral unit further comprises an angle sensor connected to the extension arm for monitoring the angle of the extension arm. Through the setting of the angle sensor, the extension arm is ensured to be perpendicular to the probe rod, so as to ensure the mutual perpendicularity of the transmitting transducer and the hydrophone, which is beneficial to simplify the signal processing process and improve the measurement accuracy.

[0052] In some embodiments, as shown in Figure 3 As shown, the shipborne part comprises a host computer unit in communication connection with the main control unit, including an action monitoring host computer and an acoustic measurement host computer, the action monitoring host computer is used for issuing control instructions and monitoring the state of each unit, and the acoustic measurement host computer is used for processing, analyzing and displaying acoustic measurement data. Specifically, the action monitoring host computer can control and monitor: the camera shooting underwater images, the on-off and lighting direction of the lighting module, the rotation speed and drilling displacement of the hydraulic motor, the rotation speed and drilling displacement of the drilling motor, the rotation speed and drilling displacement of the water pump motor, the attitude data of the measurement device acquired by the attitude module, all data stored by the storage module, and the state information of different battery groups of the power supply unit; the acoustic measurement host computer is used for controlling and monitoring: the acoustic signal emitted and the acoustic measurement data collected by the acoustic signal emission and collection module.

[0053] In some embodiments, as shown in Figure 3As shown, the shipborne part further comprises a communication unit connected with the master control unit and the host computer unit respectively, for transmitting the control instruction of the host computer unit to the master control module, and for transmitting the acoustic measurement data collected by the master control module to the host computer. A bidirectional data transmission channel is established through the communication unit; on the one hand, the communication unit can efficiently transmit the control instruction issued by the host computer unit to the master control module, realizing remote precise control of the action of each unit of the underwater measurement device; on the other hand, the acoustic measurement data collected by the master control module can be quickly transmitted to the host computer, facilitating researchers to analyze and process in time; effectively solving the data interaction problem between the shipborne part and the underwater part, greatly improving the cooperative working efficiency and remote control ability of the whole measurement system, and providing convenient and efficient data transmission guarantee for marine geological research work.

[0054] In some embodiments, as shown in Figure 3 As shown, the communication unit comprises a fiber optic transceiver connected with the master control unit and the host computer unit respectively, for data transmission of the master control unit and the host computer unit. The fiber optic transceiver can effectively reduce signal interference and attenuation, ensuring the accuracy and integrity of the control instruction and the acoustic measurement data in the transmission process, greatly improving the data transmission quality. It can be understood that the host computer unit is provided with a router cooperating with the fiber optic transceiver of the communication unit.

[0055] Further, as shown in Figure 3 The communication unit further comprises an optical-electric winch for controlling the length of the optical-electric composite cable, and the optical-electric composite cable is connected with the master control unit and the fiber optic transceiver of the communication unit respectively. Through the setting of the optical-electric winch, the length of the optical-electric composite cable can be flexibly adjusted, realizing the overall hoisting release and recovery of the measurement device, so as to adapt to the different operating depth requirements of the underwater measurement device.

[0056] In some embodiments, as shown in Figure 3 As shown, the power supply unit further comprises a power management module and a first protection circuit, the power management module is connected with the battery packs of different voltages respectively, and the first protection circuit is connected to the power management module; the first protection circuit is used to cut off the power supply of the high-voltage battery pack when the circuit is abnormal; the power management module is used to reasonably distribute the current of the low-voltage battery pack according to the needs of each unit. As an illustrative embodiment, when the circuit is abnormal, after the first protection circuit cuts off the power supply of the high-voltage battery pack, the power management module is further used to diagnose and record fault information; if the fault is eliminated, the power management module controls the first protection circuit to continue working to restore power supply; if the fault continues to exist, the power management module continues to maintain the power-off state.

[0057] In some embodiments, as shown in Figure 3As shown, the power supply unit further comprises a power control module, which is connected to the first protection circuit and the power management module respectively, and is used to control the current of the high-voltage battery pack; the power supply unit is also provided with a standardized isolation interface, which is used for the connection between the power control module and the power management module, and is also used for the connection between the power supply unit and the main control module. It can be understood that the main control unit is provided with a matching standardized isolation interface, which is used for the connection between the power control module and the main control module.

[0058] In some embodiments, as shown in Figure 3 As shown, the power supply unit comprises a 24V battery pack and a 48V battery pack, and the current of the 48V battery pack is transmitted to the sampling driver and the hydraulic driver after passing through the power management module, the first protection circuit and the power control module. As an illustrative embodiment, the hydraulic unit is also provided with an interlock protection module, the power control module is indirectly connected to the hydraulic driver through the interlock protection module to provide 48V voltage power supply for the hydraulic driver; the power management module is indirectly connected to the hydraulic driver through the interlock protection module to provide 24V voltage power supply for the hydraulic driver; only when the power control module and the power management module simultaneously provide 48V voltage power supply and 24V voltage power supply for the interlock protection module, the hydraulic driver can start to work.

[0059] In some embodiments, as shown in Figure 3 As shown, the power control module is also connected to the sampling driver, which is used for the power supply of the sampling driver.

[0060] In some embodiments, as shown in Figure 3 As shown, the main control unit is also provided with a second protection circuit, which is connected to the power management module and receives 24V power supply from the power management module. The main control module is also provided with a voltage conversion module and a delay power-on module, the voltage conversion module delivers voltage to 5V or 3.3V to the main control module, and the main control module is connected to the attitude module and the storage module and provides 5V power supply.

[0061] In some embodiments, as shown in Figure 3 As shown, the acoustic measurement unit is provided with a voltage conversion module and a low-noise power module, the delay power-on module transmits 24V power supply from the second protection circuit to the voltage conversion module of the acoustic measurement unit, the voltage conversion module of the acoustic measurement unit delivers voltage to 5V or 12V to the acoustic signal emission and collection module, and delivers voltage to 12V to the low-noise power module, while the low-noise power module provides ±5V or ±2.5V power supply for the acoustic signal emission and collection module.

[0062] In some embodiments, as shown in Figure 3As shown, the peripheral unit is also provided with a power module, and the delay power-on module delivers 24V power supply to the power module of the peripheral unit, and the power module of the peripheral unit provides 24V power supply for the camera, the angle sensor, the displacement sensor and the lighting module. According to different working modes, the power supply of part of the peripherals can be turned off to save system power.

[0063] In some embodiments, as shown, Figure 3 As shown, the power amplifier unit is also provided with a 24V battery pack and a power manager, the 24V battery pack of the power amplifier unit is connected with the power manager, the power manager is connected with the power amplifier module, and the required 24V power supply of the power amplifier module is provided by the 24V battery pack of the power amplifier unit through the power manager. The power amplifier module provides AC 100V-1000V power supply for each transmitting transducer in the transduction unit. The power manager realizes the protection functions of balanced charging, overcurrent, overtemperature, overcharge, overdischarge and the like.

[0064] Based on the above-mentioned electrical system for the seabed sediment acoustic in-situ measurement device, the control method applied to the above-mentioned electrical system for the seabed sediment acoustic in-situ measurement device is described, and the control method for the seabed sediment acoustic in-situ measurement device comprises the following steps:

[0065] S1, the power supply unit starts power supply, the main control unit, the acoustic measurement unit, the power amplifier unit, the transducer unit and the hydrophone unit are powered on;

[0066] S2, the main control module controls the acoustic signal emission and collection module to emit acoustic signals according to the instruction of the shipborne part;

[0067] S3, the power amplifier unit amplifies the acoustic signal into a high-voltage waveform electrical signal, and the transducer unit converts the electrical signal into a sound wave vibration and emits it into the seabed sediment;

[0068] S4, the hydrophone unit receives the sound wave signal passing through the seabed sediment and converts it into an electrical signal, which is transmitted to the acoustic signal emission and collection module as acoustic measurement data;

[0069] S5, the acoustic signal emission and collection module transmits the acoustic measurement data to the main control module, and the main control module transmits the acoustic measurement data to the shipborne part for analysis and processing.

[0070] In some embodiments, the instructions of the master module control include instruction single-step execution mode, semi-automatic execution mode and full-automatic execution mode; Wherein, the instruction single-step execution mode needs to act according to the instruction of the shipborne part, and each action is performed once; The semi-automatic execution mode combines part of the instructions into a combined instruction after receiving the instruction of the shipborne part, and completes the device action by issuing multiple combined instructions; In the full-automatic execution mode, the shipborne part only needs to issue a command once to automatically execute a series of actions. In the instruction single-step execution mode, one action is performed according to the instruction of the shipborne part each time, providing a highly accurate step-by-step control mode for the operator, which can ensure accurate operation of each action and facilitate accurate control of the measurement process when fine tuning or individual operation of a specific link is required. The semi-automatic execution mode combines part of the instructions into a combined instruction, which reduces the number of instructions issued and improves operation efficiency while ensuring a certain flexibility, and is suitable for measurement scenarios with relatively fixed operation processes but requiring moderate adjustment. In the full-automatic execution mode, the shipborne part only needs to issue a command once to automatically execute a series of actions, greatly simplifying the operation process and improving the automation level of measurement, especially suitable for measurement tasks with high repeatability and strict operation continuity requirements, effectively saving manpower, reducing the risk of operation errors, improving overall measurement efficiency and accuracy, and meeting different complexity and demand of seabed sediment acoustic in-situ measurement work.

[0071] In some embodiments, before step S2, the master module further controls the hydraulic unit to drill into the seabed sediment.

[0072] In some embodiments, when the master module controls the hydraulic unit to drill, the hydraulic unit can carry the sampling unit to drill synchronously until the required depth is reached, and the sampling unit is used for sampling while measuring.

[0073] Through the description of the plurality of embodiments of the electrical system of the seabed sediment acoustic in-situ measurement device of the utility model, it can be seen that the electrical system of the seabed sediment acoustic in-situ measurement device of the utility model has at least one or more of the following advantages:

[0074] 1、The electrical system for seabed sediment acoustic in-situ measurement device provided by the utility model improves the adaptability and universality of the electrical system through modular design, and can reduce the over-reliance on electrical control professionals in the research and development process, thereby improving the research and development efficiency;

[0075] 2、The electrical system for seabed sediment acoustic in-situ measurement device provided by the utility model, the operator can increase the corresponding unit or module on the basis of the measurement requirement, further improve the expansibility of the system, and better meet the different measurement scenes and requirements;

[0076] 3. The electrical system for the seabed sediment acoustic in-situ measuring device, on the basis of the main control unit, the acoustic measuring unit, the power amplifier unit, the transducer unit, the hydrophone unit and the power supply unit, after adding the sampling unit or the hydraulic unit, can be applied to the measuring device for installing the acoustic probe on the telescopic probe rod.

[0077] It should be noted that: the various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments.

[0078] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones; without departing from the spirit of the technical scheme of the present application, they should be covered in the technical scheme range of the present application.

Claims

1. An electrical system for an in-situ acoustic measurement device of marine sediments, characterized in that, The underwater part comprises a plurality of modular units connected through standardized interfaces, comprising: a main control unit connected with the shipborne part, comprising a main control module, the main control module being configured to control actions of other units according to instructions of the shipborne part and monitor states of the other units; an acoustic measurement unit connected with the main control unit, comprising an acoustic signal emission and collection module, the acoustic signal emission and collection module being configured to generate acoustic signals according to instructions of the main control unit, collect acoustic measurement data, and transmit the acoustic measurement data to the main control module; a power amplifier unit connected with the acoustic measurement unit, comprising a power amplifier module, the power amplifier module being configured to amplify the acoustic signals emitted by the acoustic measurement unit into high-voltage waveform electric signals and transmit the high-voltage waveform electric signals; a transducer unit connected with the power amplifier unit and the acoustic measurement unit respectively, comprising a transmitting transducer, the transmitting transducer being configured to convert the electric signals into acoustic waves and emit the acoustic waves into seabed sediments; a hydrophone unit connected with the acoustic measurement unit, comprising a hydrophone, the hydrophone being configured to receive acoustic wave signals passing through the seabed sediments, convert the acoustic wave signals into electric signals, and transmit the electric signals as acoustic measurement data to the acoustic signal emission and collection module; a power supply unit carrying battery packs of different voltages and configured to supply power to the shipborne part and the underwater part.

2. An electrical system for a seabed sediment acoustic in-situ measuring apparatus according to claim 1, characterized in that, The underwater part further comprises a sampling unit electrically connected with the power supply unit and configured to sample the seabed sediments during measurement.

3. An electrical system for a seabed sediment acoustic in-situ measuring apparatus according to claim 2, characterised in that, The underwater part further comprises a hydraulic unit connected with the main control unit and the power supply unit and configured to drill into the seabed sediments according to instructions of the main control unit.

4. An electrical system for a seabed sediment acoustic in-situ measuring apparatus according to claim 3, characterized in that, The underwater part further comprises an external unit connected with the main control unit, the external unit comprising a camera configured to acquire underwater images.

5. An electrical system for a seabed sediment acoustic in-situ measuring apparatus according to claim 4, characterized in that, The external unit further comprises an illumination module configured to assist the camera in capturing underwater images.

6. An electrical system for a seabed sediment acoustic in-situ measuring apparatus according to claim 4, characterized in that, The external unit further comprises a displacement sensor connected with a probe rod and configured to measure a penetration depth of the probe rod.

7. An electrical system for a seabed sediment acoustic in situ measuring apparatus according to claim 1, characterized in that, The shipborne part comprises a host computer unit in communication connection with the main control unit, the host computer unit comprising an action monitoring host computer and an acoustic measurement host computer, the action monitoring host computer being configured to issue control instructions and monitor states of the units, and the acoustic measurement host computer being configured to process, analyze, and display acoustic measurement data.

8. An electrical system for a seabed sediment acoustic in-situ measuring apparatus according to claim 7, characterized in that, The shipborne part further comprises a communication unit connected with the main control unit and the host computer unit, the communication unit being configured to transmit the control instructions of the host computer unit to the main control module and transmit acoustic measurement data collected by the main control module to the host computer.

9. An electrical system for a seabed sediment acoustic in situ measuring apparatus according to claim 1, characterized in that, The power supply unit further comprises a power management module connected with the battery packs of different voltages and a protection circuit connected with the power management module; the protection circuit being configured to cut off power supply of the high-voltage battery pack when an abnormality occurs in a circuit, and the power management module being configured to reasonably distribute currents of the battery packs according to demands of the units.

10. An electrical system for a seabed sediment acoustic in situ measuring apparatus according to claim 1, characterized in that, The main control unit further comprises an attitude module connected with the main control module, the attitude module being configured to acquire real-time attitude data of the seabed sediment acoustic in-situ measurement device and transmit the real-time attitude data to the main control module.

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